Crimping mechanism for cylinder-forming machines



w. R. MYERS 1,761,990

CRIMPING MECHANISM FDR CYLINDER FORMING MQCHINES Filed May 22,1928 2 Sheets-Sheet l INVENTOR Wtlsofl ffjfyefs.

v ATTORNEY w. R. MYERS 1,761,990

CRIMPING MECHANISM FOR CYLINDER FORMING MACHINES June 3', 1930.

Filed May 22,- 1928 2 Shets-Shet 2 INVENTOR 2%1501125? .Myers.

ATTORNEY Patented June 3, 1930 r osricr.

WILSON R. MYERS, OF NEW YORK, N. Y., ASSIGNOR T ICE CREAM: SMACK CORPORA- TION, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE CRIMPING MECHANISM FOR CYLINDER FORMING MACHINES Application filed May 22, 1928. Serial No. 279,753.

My invention relates to certain new and useful improvements in cylinder forming machines of the kind disclosed in the application of myself and Bernhard O. Opitz, Serial No. 171,792. In that application is disclosed a machine consisting, generally,of a suitable frame on which is mounted a rotatable mandrel, a roll-of-paper holder, and mech' anism for delivering paper from the roll to the mandrel and severing the paper transversely into lengths; means are also provided for turning over or crimping a projecting end o-fthe cylinder formed by the mandrel and pressing the crimped portion inwardly to 1 form a bottom for the cylinder. The crimper of that machine comprises a pivoted arm.

which, at proper intervals, presses down onto the projecting paper beyond the end of the mandrel to effect the crimping operation. The crimper is moved to the crimper position by a cam on a reciprocating bar as the bar moves upwardly and is turned to its inac tive position by spring action. 7

My present invention provides certainimprovements whereby the crimper will be more effective in its action and will work equally as well when paraffined paper is used as when plain paper is employed.

When paraffine coated'paper is used in the machine of the application aforesaid difliculty has been experienced with the paraffine coating the crimper arm and sometimes interfering with its eflicient operation. There fore, it is a primary object of my present invention to overcome this objectionable feature.

In order to carry out my invention I provide the crimper arm with an opening designed normally to lie in alignment with the 40 end of the mandrel, spring means being provided to bring theiarm through the crimping position as well as to hold it in the normal position against a cam of a reciprocating rod which controls the operation of thecrimper,

5 the cam being eifective to hold the crimper in the normal position when the rod is down and to permit the spring to operate as the rod moves upwardly.

Another object is to provide the crimping 5 arm with means to maintain its temperature sufliciently high to melt any parafline that may tend to accumulate on it.

A further object is to provide a crimper arm with a guide finger to ensure the proper directing of the paper, which forms the end of the cylinder, into the crimper, and to provide the lower portion of the crimper with a slot to' permit the point of the bottom of the cylinder to pass through without unspinning the same.

Other. objects will in part be obvious and in part be pointed out hereinafter.

To the attainment of the aforesaid objects and ends, my invention consists in the novel details of construction and in the combination, connection and arrangement of parts,

hereinafter more fully described and then pointed out in the claims.

In the drawings:

Figure 1 is a side elevation of so much of the cylinder forming machine as is necessary to illustrate the application of my invention.

Figure 2 is an enlarged detail side elevation of the final paper-feed rolls, the mandrel, the crimper, and the crimper-operation controlling bar, the same being in the normal or at rest position.

Figure 3 is a view similar to Figure 2 with the crimper-operation controlling bar elevated, and the crimper finger raised up after having passed the'end of the mandrel and performed its crimping operation so as to be out of the way when the presser member (not shown) moves into position.

Figure 4 is a detail perspective view showing the" invention, the paper cylinder being shown in dotted lines.

In the drawing, in which like numerals of reference indicate like parts in all the figures, 1 is the frame of the machine, 2 one of the main rotating shafts, 3 the final paper-feed rolls, 4 the mandrel and 5 the reciprocating bar which controls the action of'the crimper and of the end presser member (not shown).

In the presentembodiment of my invention the bar 5 is provided with a holding cam 6 that is adapted to engage, at its lowermost position, a roller 17 on the vertical arm 18 of the crimperi eration of the member the crimper 8 which is pivotedat 7 to a suitable support.

The crimper 8 has an opening 90f sufi'icient area to receive the paper cylinder on the mandred as it is formed and this opening is normally held in alignment with the mandrel by engagement of the roller 17 with the cam 6, see Figure 2. I

10 is the crimping finger which is adapted, on its upward movement, to engage the paper cylinder near its edge and press it inwardly toward the axis of the cylinder .to effect the crimping or turning over of the paper on the mandrel to start the bottom-forming operation.

11 is the operating lever that effects reciprocation of the bar 5, the lever 11 being operated by a suitable cam 13 on the shaft f the machine- I The lever 11 is connected'to the bar 5 a link connection 12 as in the machine hereinbefore referred to.

An extension 19, movable as one with the arm 8, has secured thereto a spring 14-that functions to keep the roller 17 in engagement with the cam 6 or bar 5 according to the posi tion of the cam and bar and this spring opposes the action of the cam 6.

V The crimper finger 10 has a slot 20 that will permit free passage of the point m of the paper cylinder X so as not to unspin the same as the finger 10 moves upwardly beyond the axial line ofthe cylinder.

Furthermore, the arm 8hasan upper guide Y finger 21 whoseunder surface 22 extends tangentially to the curved surface 23 of the 'ger '10 and-functions to guide the paperstr p in its passage toand around the cavity of Inorder to maintain the temperature of the crimper arm 8' I provide a suitableelectrio heater16 mounted on that arm or adjacent thereto so as to warm the metal of the arm and prevent the parafline from piling up by adhesion thereto.

It will be seen that'when the cam 13 presses down on the lever 11 it will elevate the bar 5. This action results in the spring 14 rocking: the lever 19 so as-to move the finger 10 1 upwardly. During this upward movement of-thefinger 10 the end of the paper cylinder see Fig. 4:) which lies in the'concavity of the opening 9 is position shown in Figures 1 and 2 to the position shown in Figure 4L to complete the formation of the bottomof the cylinder by pressing the crimped and infolded end tightly against the end of the mandrel. As the. op-

is old in the prior pressed upwardly. The cylinder being under rapid rotation the projecting endof' the cylinder is thus bent toward the 7 application above referred to and constitutes no part of the present invention detailed disclosure of its operating mechanism is thought to be unnecessary in this application. In the operation of my present inventlon 1t will be noted that the crimping action takes F place on the upward movement of the finger 10 insteadof on the downward movement of the crimping arm as in the applicationaforesaid. By changing the direction of movement of the arm in this'way I'am enabled to employ the electric heater in a position where it will function towarm the arm and not over-heat the parafiine on the paper itself.

- From the foregoingdescription, taken in connection with the accompanying drawing,

it is. thought that the complete construction, 7

operation and advantages of my invention will be clearto' those skilled inthe art to '1 which it relates.

What I claim is: 1

1. In a machineof the characterdescribed,

a rotatable mandrel, a' pivoted crimperv and a reciprocating crimper-operation controlling bar having acarn, said crimperhavmg a ing an arm having a forked "end provided with an opening aligning normally with said mandrel.

2. In a machine of thecharacter described, a rotatable mandrel, a pivoted crimper and a reciprocating crimper-operation control ling bar having a cam, said crimper having a portion engaging said cam, and a spring continuously tending to move said, crimper inoppositlon to said bar,andmeanstoma1ntain. the crimper heated for the purposes'dei scribed. I

3. In a machine of the character described, a rotatable mandrel, a pivoted crimper and a reciprocating crimper-operation controlling bar having a cam, said crimper having aportion engaging said cam, aspring continuously tending to move said crimper 1n opposi tion, to said bar, said crimper including an armhaving a forked-end provided with an opening aligning normally with said mandrel, and means to maintain the arm heated for the purposes described.

4. In a machine of theclass described wherein is provided a rotatable mandrel, a crimper, a crimper operation-controlling bar and means to actuate said bar, said crimper comprisinga bell crank lever, one end of which is forked to provide an opening to'receive. the formed cylinder, the other'end of said lever having a roller, said'bar being reciprocable and having a cam to engage said roller when the lever is down for the purpose of holdingsaid'openingin alignment with said mandrel.

5. In a machine "of thelc'lass described I wherein isprovided a rotatable mandrel, a

crimper, a crimper operation-controlling bar and means to actuate said bar, said crimper comprising a bell crank lever, one end of which is forked to provide an opening to receive the formed cylinder, the other end of said lever having a roller, said bar being reciprocable and having a cam to engage said roller when the lever is down for the purpose of holding said opening in alignment with said mandrel, and an electric heater associated with said lever, substantially as shown and described.

6. In a machine of the character described, a rotatable mandrel, a pivoted crimper, a reciprocating crimper-operation controlling bar having a cam, said crimper having a portion engaging said cam and a spring continuously tending to move said crimper in opposition to said bar, said crimper including an arm having a forked end provided with an opening aligning normally with said mandrel, said forked end comprising a lower finger having a curved working surface, and an :upper finger having a working surface approximately tangent to the curved surface.

7 In a machine of the character described, a rotatable mandrel, a pivoted crimper and a reciprocating crimper-operation controlling bar having a cam, said crimper having a portion engaging said cam, and a spring continuously tending to move said crimper in opposition to said bar, said crimper including an arm with an upper finger and a lower finger, said lower finger having a transverse slot for the purposes described.

8.v In a machine of the character described, a rotatable mandrel a pivoted crimper and a reciprocating crimper-operation controlling bar having a cam, said crimper having a portion engaging said cam, and aspring continuously tending to move said crimper in opposition to said bar, said crimper including an arm with an upper fingerand a lower finger, said lower finger having a'transverse slot, said upper finger having a straight paper guiding surface which merges with a curved surface at the junction of said "fingers.

9. In a machine of the character described,

a rotatable mandrel, a pivoted crimper and a reciprocating crimper-operation controlling bar having a cam, said crimper having a portion engaging said cam, a spring continuously tending to move said crimper in opposition to said bar, said crimper including an arm having a forked end provided with an opening aligning normally with said mandrel, and means to maintain the crimper heated, said forked end comprising an upper finger and a lower finger, the combined working faces of said fingers including a curved portion and a straight portion for the purposes specified,

10. In a machine of the class described wherein is provided a rotatable mandrel, a crimper, a crimper operation-controlling bar and means to actuate said bar, said crimper comprising a bell crank lever, one end of which is forked to provide an opening to receive the formed cylinder, the other end of said lever having a roller, said bar being reciprocable and having a cam to engage said roller when the lever is down for the purpose of holding said opening in alignment with said mandrel said forked end comprising a lower short curved finger and an upper long straight finger.

11. In a machine of the class described wherein is provided a rotatable mandrel, a crimper, a crimper operation-controlling bar and means to actuate said bar, said crimper comprising a bell crank lever, one end of which is forked to provide an opening to receive the formed cylinder, the other end of said lever having a roller, said bar being reciprocable and having a cam to engage said roller when the lever is down for the purpose of holding said opening in alignment with said mandrel said forked end comprising a lower short curved finger and an upper long straight finger, said lower finger having a slot for the purpose specified.

' 12. In a machine of the character described, a rotatable mandrel, a pivoted crimper and a eciprocating crimper-operation controlling bar having a cam, said crimper having a portion engaging said cam, and a spring continuously tending to move said crimper in opposition to said bar,said crimper including an arm with an upper finger and a lower finger,

said lower finger having a transverse slot, and

means for heating said crimper.

' 18. In a machine of the character described, a rotatable mandrel, a pivoted crimper and a reciprocating crimper-operation controlling bar having a cam, said crimper having a portion engaging said cam, and a spring continuously tending to move said crimper in opposition to said bar, said crimper including an arm with an upper finger and a lower finger, said lower finger having a transverse slot,

said upper finger having a straight paper guiding surface which merges with a curved surface at the junction of said fingers, and means for heating said crimper.

14. In a machine of the character described, a rotatable mandrel, a pivoted crimper, means for reciprocating said crimper, said crimper including an arm having a forked end providing a lower finger and an upper finger, the working face of said lower finger and a portion of the working face of said upper finger being curved and of a radius approxi mately that of the exterior of the cylinder to be formed, said upper finger including a straightway working surface portion merging with the curved surface and extending approximately tangentially thereto for the purpose specified.

15. In a machine of the character described, a rotatable mandrel, a pivoted crimper, means for reciprocating said crimper, said crimper includingan arm having a forked end providing a lower finger and an upper finger, the Working face of said lower finger and a portion of the Working face of said upper finger being curved and of a radius approximately that of the exterior of the cylinder to be formed, said upper finger including a straightway Working surface portion merging With the curved surface and extending approximately tangentially thereto, an electric heating unit carried-0n said arm inassociation With the upper finger, for the purposes described.

WILSON B. MYERS. 

